Improvement in machines for cutting staves



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THOMAS HANVEY, OF ELMA, NEW YORK.

IMPROVEMENT IN MACHINES FOR CUTTING STAVES.

Specification forming part of Letters Patent No. 45,323, dated December (i, 1864.

To all whom lt may concern:

Be it known that I, THoMAs HANVEY, of the town of Elma, in the county of Erie and State of New York, have invented a certain new and Improved Stave-Outting Machine; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part ot' this specilication, in which` Figure I is a longitudinal section. Fig. Il is a transverse section. Fig. III is a top plan v.ew.

Letters ot' like name and kind refer to like p irts in each ot' the figures.

The nature ot' this invention relates to the construction and use of a machine for cutting or slicing staves from a bolt or block of wood, the cutter acting sidewise upon the block as distinguished from endwise, and slicing off the stave instead of splitting it; and it cousists mainly ot' four elementsto wit: First, a four-sided box, without a bottom, so made as to receive and feed the block of wood to the cutter sidewise of the wood by a reciprocat ing movement ot' the box in the main frame of the machine; second, a stationary plate or table,which supports theblock, and upon which the block slides back and forth as it is moved bythe box; third, an adjustable table, placed a little lower than the stationary table, which catches the block as it slides ottl the stationary table in the reverso movement for a new feed and by which the thickness of the stave to be cut is regulated; and fourth, aknit'e or cutter (which cuts the timber instead of splitting it) which is attached by appropriate bolts or screws to the stationary table.

There are also attached to this machine two other devices ot' less importance, but very useful in the practical workingot'the machineto wit: a spring for holding the block ot' wood in place while the operation is going on, and a head-block of wood, or other soft material, for the cutter to cut against as itslices ot't'a stave.

A represents the main frame-work ot' the machine, which may be made of cast-iron or other suitable material.

B represents the foursided bottomless box, hereinabove referred to, and which is also made of cast-iron. It is made to slide freely and steadily back and forth on the upper edge l of the main frame, and thereby move the block of wood therein to and from the cutter. This box is made of sutiicient capacity to receive a block for the longest stave to be cut, the length ot1 the block being transverse the reciprocating motion of the box, so that the block will be driven sidewise against the cutter.

C is a stationary table, which is strongly connected with the main frame, or it may be cast with the fraincas a part thereof.

D is the cutter, attached to the stationary table by means ofthe bolts or screws d. It is made suflicientl y wide to allow it to be bolted to the stationary table, and the edge is bev eled on the under side, so that the stave which is cut will be directed downwardly. The cutter is made of greater length than the longest stave to be cut, so that it can cut the whole length of the stave sidewise ot` the stave at one stroke and in a manner parallel with the grain ofthe wood.

E is an adjustable table, upon which the block of wood drops in its backward Inoveinent from the cutter. This tableis made adjustable by means of the large-headed screwbolts c', which pass through appropriate slots, j', made in' the side of the main frame. The bolts screw into the table, so that by loosening the bolts a little the table may be raised or lowered and placed for staves ot' any required thickness, and the bolts then screwed up tight so as to hold the table as placed. The distance this table is placed below the cutter determines the thickness of the stave.

G represents a strip of wood or other soft the cutter to cut against. This strip is held in place by means of the screws gf, which pass through the slots h and screw into the strip and hold it securely in place. The slots will allow the strip to be moved up as it wears away, so as to keep it flush for the cutter to cut against. This will prevent the timber from splitting at the outer edge as the cutter passes through.

J' represents a spring, which is intended to bear upon the block ot' wood in the box and holdit close to and in contact with the strip G. This spring may be made iu any convenient form and att-ached to the box so as to answer the required purpose.

S represents a sta-ve just sliced from the block.

material, which is connected with the box, for

Krepresents a eonnectin g-rod, which isjointed to the box, as shown at L, and connected with the driving crank of the engine, by which power is applied to the machine in a common 1112111101".

Operation: 'lhe blocks of Wood to be cut into staves are in the first place thoroughly steamed in a common manner. They are then one by one placed in the box (the box beingl at the limit ot' its reverse movement) so that the block will rest upon the adj ustable table and in contact with the Wood strips G and the spring J, brought to bear so as to hold the block in place. of the box will drive the block of Wood against the cutter and a stave will be sliced oi' from the under side of the block, which Will drop down under the VYmachine While the block passes on to the stationary table. The re- Verse movement of the box draws the block back and it falls down by its own gravity upon the adjustable table, ready again to be fed to the cutter by the next forward movement of the box. And thus the operation is continued until the block is all sliced up into staves. In

this manner staves may be cut Very rapidly and as Wide as the diameter of the blt ck or The first forward movement log, and a great saving of labor and timber is thereby effected. The staves thus cut are ready to be passed through a forming and compressing machine and afterward jointed and crozed, and an excellent quality of stavcs is thereby produced.

This machine is also applicable for cutting heading, trunk-boards, veneering, and the like.

l claiml. In a machine for cutting or slicing staves from a boltor block of Wood, the combination ofthe movable box B, stationary table G, cutter D, and adjustable table E,t`or the purposes and substantiall y as described.

2. In a machine for cutting staves, substantially as herein described, aspring, J, attached to the movable box B, so that it will bear against the wood block to be cut and press it against the side of the box (or strip G therein) to prevent the woodv block from sliding sidewise While the process of cutting is going on, substantially as set forth.

THOS. HANVEY.

Vitncsses:

E. B. FORBUSH, M. B. MOORE. 

